I have literally tried just about every product on the market, both OTC and prescribed, and they all work at first (a few days) then - nothing.
Anti-anxiety meds help a bit with the racing heart and white noise in my head every night because I can't fall asleep, but I've become rattled with the idea that over time, I'll actually be decreasing my life span from not getting enough sleep, aging faster than I want to and stressing my heart (all downsides to poor sleep for years).